National Instruments Corporation GPIB-1014P User Manual page 79

Register Descriptions
Bit Mnemonic
1w SPEOI
0w CPT ENABLE Command Pass Through Enable Bit
GPIB-1014P User Manual
Description
Collector.) Setting TRI enables timing during the GPIB Source
Handshake function after transmission of the first byte. Clearing TRI
sets the T1 timing to low speed in all cases.
Send Serial Poll EOI Bit
The SPEOI bit permits or prohibits the transmission of the END
message in Serial Poll Active State (SPAS). If SPEOI is set, EOI is sent
true when the TLC is in SPAS; otherwise, EOI is sent false in SPAS.
The CPT ENABLE bit permits or prohibits the detection of undefined
GPIB commands and permits or prohibits the setting of the CPT bit
(ISR1[7]r) on receipt of an undefined command. When CPT ENAB is
set and an undefined command has been received, the DAC message is
held and the Handshake stops until the Valid auxiliary command is
issued. The undefined command can be read from the CPTR and
processed by the software.
4-42
Section Four
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